Company
NO 20 Elvaston Place Limited
NO 20 Elvaston Place Limited is an active UK company (number 00865448), incorporated 1965, with 4 current directors including Rosemary Sarah Bentley Riach and Jean Powner. Source: Companies House, updated 11th October 2026.
The people who lead this organisation are listed below. Create a free account to save it, get alerts and check how you are connected.
Official record Companies House · updated 11th October 2026 · Sources · Free, no card or password
Network
The large node is NO 20 Elvaston Place Limited. Red nodes are organisations, white nodes are people. Dashed links are historical or inferred. Click any node to explore.
Who leads it
Previous officers 12
- Anthony Edward Michael Simler 2009-2026 View profile
- Ian Michael Collinson 2009-2015 View profile
- Sabina Margulies 1997-2006 View profile
- Colin Edward Gilchrist Riach 1993-2021 View profile
- John Powner 2009 View profile
- Antony Henry Constantine Wardell 1990 View profile
- Lady Alexandra Maria Mackechnie 1996 View profile
- Simon O'Connor 2011-2020 View profile
- Pembertons Secretaries Limited 2010-2011 View profile
- Christopher Laurence Burbridge 2000-2005 View profile
- David Cook-Abbott 1994-2000 View profile
- Sir Alistair John Mackechnie 1996 View profile
Directors and secretaries as filed at Companies House.
Do you help lead this organisation? Set up its network · How it works
About
- Incorporated
- 01/12/1965
Board analysis
Board DNA
How this board is put together, from the Companies House officer record and Charity Commission trustee records - deterministic, no AI.iBoard compositionCounted from the dated Companies House officer record: the current directors only, past directors excluded.
4 directors on the board
- Jan Peter Onstwedder Director · appointed 1996
- Jean Powner Director · appointed 2009
- Constantine Harilous Varvatsoulis Director · appointed 1994
- Rosemary Sarah Bentley Riach Director · appointed 2021
Directors past 6 years
- Jan Peter Onstwedder Director · appointed 1996
- Jean Powner Director · appointed 2009
- Constantine Harilous Varvatsoulis Director · appointed 1994
First-time vs portfolio directors
First-time (2)
- Jean Powner Director · appointed 2009
- Rosemary Sarah Bentley Riach Director · appointed 2021
Portfolio (2)
- Jan Peter Onstwedder Director · appointed 1996
- Constantine Harilous Varvatsoulis Director · appointed 1994
Left in the last 12 months
- Anthony Edward Michael Simler Director · appointed 2009 · resigned 2026
Where else this board sits iWhere else this board sitsThe charitable fields these directors govern in elsewhere, by Charity Commission classification. Excludes this company and any charity it is the legal face of.
The sectors these directors govern in elsewhere. This company, and any charity it is the legal face of, are excluded - counting them would just tell you what you are already looking at.
Gaps to watch
- Several long-serving directors could step down together
- No director brings board experience from anywhere else
- Narrow spread of sectors across the board
Where to look Suggested search: succession planning for long-tenured seats; a director with board experience elsewhere.
Sources
Official record from Companies House. Governance Register calculates the connections.
Record details
- Company number
- 00865448
- Status
- Active
- Type
- PRI/LTD BY GUAR/NSC (Private, limited by guarantee, no share capital)
- Edition
- Register edition compiled 11th October 2026
- Labels
- Official record from Companies House · Calculated derived by Governance Register.
Contains public sector information licensed under the Open Government Licence v3.0. Report an issue · How we handle data